Curling-iron



(No Model.)

G. L. THOMPSON.

G IfRLINe IRON.J

Patented May 8, 1894.

. that class which are provided with a cylindricY UNITED STATES PATENTOFFICE.

GEORGE L. THOMPSON, OF CHICAGO, ILLINOIS.

CURL/ING-IR'ON.

SPECIFICATION forming part of Letters Patent No. 519,6;53,- dated May 8,1894.

.Application filed September l, 1893. Serial No.k 484,594. No model.)

To @ZZ whom it mctylconccrn:

Be it known that I, GEORGE L. THOMPSON, of Chicago, in the county ofCookfand State' of Illinois, have invented certain new and usefulImprovements in Curling-Irons; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

This invention relates to curling irons of mandrel; a concave clasppivoted thereto, two wooden handles attached to the ends 'of outwardlydivergent shanks on the mandrel and clasp, and a spring applied betweenthe Shanks to throw the mandrel and clasp together, and wherein themandrel and its shank consist of a cylindric rod of drawn metal properlybent to form the shank, and the clasp consists of a single piece oflsheet metal properly bent to form the clasp and its shank.

The invention relates more particularly to the construction of springsfor such curling irons and means for securing the same in place.

In the accompanying drawings illustrating my inventionz" Figure l is aview in side elevation, with parts in section, of `a curling ironembodying the invention. side view of the shank of the mandrel. Fig. 3is a face view of that part `of the mandrel shank shown in Fig. 2. Fig.4 is a cross section taken on line 4-4 of Figi. Fig. 5 is a sideelevatiomwith parts in section, of a curling iron difterin g slightlyfrom that shown in Fig. 1. Fig. Gris a face viewshowing the innersurface of lthe mandrel shankillustrated in Fig. 5.

As shown in the said drawings, A is the mandrel andv'B the clasp, saidmandrel and clasp being connected at their inner ends by a pivot C andbeing provided with outwardly deiiected or inclined shanks A B to theends of which are attached two similar wooden handles D D. The mandrel Aand its shankare made of a single drawn rod of cylindric form which isoppositely bent a-t a a3 to form the 5o inclined shank A', in the mannerillustrated.

Fig. 2 is a detail The claspB and its shank Bfare formed of asingle'piece of sheet metal which is transversely bent into curved formto give proper concave shape to the clasp B and to make the shank B ofU-'shape in cross section for giving stiffness to the same. The handlesD D are secured to the Shanks A B of the mandrel and clasp by beingprovided with sockets into which the ends of said Shanks are inserted ordriven.

E is a spring which consists of a thin metal rod or wire bent into Ul orV form with a central coil e to` give elasticity thereto and locatedbetween the shanksof the mandrel and clasp with its ends adjacent to theouter ends of said Shanks and acting upon said shanks to force the sameapart so as to hold the clasp normally closed against the mandrel.v Wiresprings Ythus formed and'iap'plied have been heretofore used and myinventionxconsists in a novelmeans for holdingor securing such a springin place, such means being constructed as follows: j, Y

Thatfend e of the spring E which bears `against the inner surface of theclasp shank merely rests within the same Without attachmentthereto, andin this respect the spring is likeothers heretofore made. The oppositeend ezof the spring is so bent as to stand parallel with that part ofthe shank A which enters the handle D, and in the inner surface of saidshank is formed alongitudinal groove a of the same width as the wire ofwhich the spring is composed but of less depth than the thickness of thewire, so that the end of the spring will Iit closely in said groove andwill be held from lateral movement therein while at the same time thewire will project fromthe groove and outside of' the cylindric surfaceof the mandrel, as clearly seen in Fig. 4, so that it will be partiallyembedded in the wood forming the handle. The socketot the handle beingunprovided with any recess or groove to receive the end of the spring,it is obvious that when the handle is forced upon the mandrel shank andover the end of the spring which ,projects from the same, in the mannerdescribed, it will tightly or closely bind and hold the end of thespring in the groove a. and thus aord a strong and secure attachment cfthe spring IOO to the shank. As shown in Figs. 1, 2 and 3, the groove aterminates short of the extreme end of the mandrel shank, terminating ina transverse groove or notch a2, butin the construction shown in Figs. 5and 6 the groove a extends to the extreme end of the maw drel. In eithercase the general result secured is the same, to wit, the end of thespring is firmly clamped to the mandrel while the engagement of thespring with both themand rel shank and handle prevents the turning ofthe handle on the said shank.

When the transverse notch or depression a2 is present, as seen in Figs.1', 2 and 3, the extreme end e3 of the spring will be bent outward so asto enter or rest in said notch or depression, the purpose of thisconstruction being to prevent the end of the spring from shiftingendwise on the mandrel, either in placing the handle on the mandrelshank or in the subsequent use of the article. The notch or depressiona? is shown in the drawings as extending across the mandrel shanktransversely to the groove a', but a recess or depression of anysuitable shape, provided it is adapted to receive the out-turned end e3of the spring, will obviously serve the same purpose. When the groove ais extended to the extreme end of the mandrel shank, as seen in Figs. 5and 6, the end of the spring may either be terminated short of the endof the shank as seen in full lines in Fig. 5, or it may be extended tothe end of the shank and provided with a laterally bent part extendingover the end surface of the shank, as seen in dotted lines in said Fig.5, this latter construction obviously serving to hold the spring fromlongitudinal movement on the shank in the same manner as theconstruction illustrated in Fig. l.

One of the principal advantages gained by the employment of a groove inthe cylindrc mandrel shank of the same width as the diameter of the wirebut shallower than the Wire of the spring so that the wire is embeddedpartially in the wood of the handle, is that this construction preventsthe turning of the handle on the shank. In the construction of curlingirons of this kind the handles are merely forced upon the Shanks and noother fastening device used to prevent the detachment of the handles. Itis found, however, that if the handle be once turned upon the shank itwill thereafter be so loose as to be easily pulled endwise therefrom andit is therefore highly desirable to prevent the turning of the handle onthe shank.` This result is produced by the construct-ion described, itbeing clear that after the handle has been forced over the shank and theend of the Wire spring which projects from the same, the handle cannotafterward be turned with any ordinary force applied thereto and istherefore secure from detachment by any ordinary use of the implementduring the ordinary life of the same. If the mandrel shank were left inits cylindrc form and the end of the wire spring inserted in the handlewith the shank it is obvious that the handle could loe easily turned onthe shank, and when so turned it is obvious that the end of the springthus inserted would be carried around the shank with the haudle. It isfurthermore obvious that after the handle is once loosened by turning inthis manner the outward pressure of the spring acting on the smoothsurface of the cylindric shank would tend to carry or turn the handlefarther around if slightly shifted from its original or normal position.By the formation of a shallow groove in the cylindrc shank, asdescribed, the possibility of such turning of the handle or displacementof the spring and handle by the action of the spring is entirelyavoided. The construction described furthcrmore constitutes an importantadvantage in the manufacture of implements of the kind described,because affording a secure and permanent fastening of the spring inplace without adding, to any appreciable extent, to the expense ofmanufacturing the article. In this connection it is to be noted that thegroove a and the notch or recess a2, when the latter is present, may beformed by the press or drop hammer at the same time the rod is bent toform the mandrel shank, it being only necessary to suitably shape thesurface of the die used for bending in order to produce this result.

I claim as my inventionl. A curling iron comprising a cylindrc metal rodconstituting a mandrel member bent to forma shank and having in theinner surface of its shank a longitudinal groove, a clasping memberpivotally connected with the mandrel member and having an outwardlyextending shank, a V-shaped wire spring interposed between the mandrelshank and clasp shank and adapted to rest at one end within the groovein the cylindrc mandrel shank, said groove being made of the same widthas, but of less depth than, the diameter of the Wire, and wooden handleshaving sockets to receive the mandrel and clasp Shanks, the handle whichis attached to the mandrel shank being forced over the end of the sameand the Vspring which rests in the said groove, substantially asdescribed.

2. A curling iron comprising a cylindrc metal rod constituting a mandrelmember bent to form a shank andhaving in the inner surface of its shanka longitudinal groove and at the end of said groove a depression orrecess, a clasping member pivotally connected with the mandrel memberand having an outwardly extending shank, a V-shaped wire springinterposed between the mandrel shank and clasp shank and adapted to restat one end within thegroove in thecylindric mandrel shank and having itsextreme end bent outwardly to enter the said depression or recess, saidgroove being made of the same width as, but of less depth than, thediame- IIO my signature in presence ter of the wire, and wooden handleshaving my invention I aix sockets tlc: Il'leceilfe tie hmandrel 1znclalslp of two witnesses. shanks, t e and e w ic is attac e to t emandrel shank being forced over the end of GEORGE L' 'THOMPS 5 the Sameand the spring which rests in the Witnesses:

said groove, substantially as described. C. CLARENCE POOLE, In testimonythat I claim the foregoing as TAYLOR E.' BROWN.

